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[" प्रश्न "6." यदि "^(2n)C(3):^(n)C(2)=4...

[" प्रश्न "6." यदि "^(2n)C_(3):^(n)C_(2)=44:3" तो "r" के किमे "],[" लिये "^(n)C_(r)" का मान "15" होगा? "]

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